scripts/depmod.sh

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 #
   4 # A depmod wrapper used by the toplevel Makefile
   5
   6 if test $# -ne 2; then
   7         echo "Usage: $0 /sbin/depmod <kernelrelease>" >&2
   8         exit 1
   9 fi
  10 DEPMOD=$1
  11 KERNELRELEASE=$2
  12
  13 if ! test -r System.map -a -x "$DEPMOD"; then
  14         exit 0
  15 fi
  16
  17 # older versions of depmod require the version string to start with three
  18 # numbers, so we cheat with a symlink here
  19 depmod_hack_needed=true
  20 tmp_dir=$(mktemp -d ${TMPDIR:-/tmp}/depmod.XXXXXX)
  21 mkdir -p "$tmp_dir/lib/modules/$KERNELRELEASE"
  22 if "$DEPMOD" -b "$tmp_dir" $KERNELRELEASE 2>/dev/null; then
  23         if test -e "$tmp_dir/lib/modules/$KERNELRELEASE/modules.dep" -o \
  24                 -e "$tmp_dir/lib/modules/$KERNELRELEASE/modules.dep.bin"; then
  25                 depmod_hack_needed=false
  26         fi
  27 fi
  28 rm -rf "$tmp_dir"
  29 if $depmod_hack_needed; then
  30         symlink="$INSTALL_MOD_PATH/lib/modules/99.98.$KERNELRELEASE"
  31         ln -s "$KERNELRELEASE" "$symlink"
  32         KERNELRELEASE=99.98.$KERNELRELEASE
  33 fi
  34
  35 set -- -ae -F System.map
  36 if test -n "$INSTALL_MOD_PATH"; then
  37         set -- "$@" -b "$INSTALL_MOD_PATH"
  38 fi
  39 "$DEPMOD" "$@" "$KERNELRELEASE"
  40 ret=$?
  41
  42 if $depmod_hack_needed; then
  43         rm -f "$symlink"
  44 fi
  45
  46 exit $ret